Simplify:(4 + root 2 ) (7root3 + root 5
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Step-by-step explanation:
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\begin{gathered}(4 + \sqrt{5} ) \times ( \sqrt{3} - \sqrt{7} ) \\ = 4 \sqrt{3} + \sqrt{15} - 4\sqrt{7} - \sqrt{35} \\ = 6.92 + 3.87 - 10.58 - 5.91 \\ = 10.79 - 16.49 \\ = - 5.7\end{gathered}
(4+
5
)×(
3
−
7
)
=4
3
+
15
−4
7−35
=6.92+3.87−10.58−5.91
=10.79−16.49
=−5.7
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